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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:14:16,250 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:14:16,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:14:16,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:14:16,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:14:16,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:14:16,274 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:14:16,276 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:14:16,278 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:14:16,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:14:16,281 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:14:16,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:14:16,284 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:14:16,285 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:14:16,286 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:14:16,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:14:16,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:14:16,295 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:14:16,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:14:16,308 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:14:16,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:14:16,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:14:16,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:14:16,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:14:16,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:14:16,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:14:16,319 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:14:16,323 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:14:16,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:14:16,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:14:16,327 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:14:16,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:14:16,328 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:14:16,328 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:14:16,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:14:16,331 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:14:16,331 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:14:16,358 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:14:16,358 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:14:16,360 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:14:16,360 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:14:16,360 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:14:16,360 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:14:16,361 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:14:16,362 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:14:16,362 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:14:16,363 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:14:16,363 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:14:16,363 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:14:16,363 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:14:16,364 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:14:16,364 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:14:16,364 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:14:16,364 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:14:16,364 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:14:16,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:14:16,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:14:16,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:14:16,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:14:16,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:14:16,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:14:16,369 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:14:16,369 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:14:16,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:14:16,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:14:16,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:14:16,445 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:14:16,445 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:14:16,446 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-11-07 07:14:16,513 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ae1cdf9/71fa379e2df54ae2b58b0fb8aa939b27/FLAG6ccd174f7 [2018-11-07 07:14:17,130 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:14:17,130 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-11-07 07:14:17,148 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ae1cdf9/71fa379e2df54ae2b58b0fb8aa939b27/FLAG6ccd174f7 [2018-11-07 07:14:17,164 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ae1cdf9/71fa379e2df54ae2b58b0fb8aa939b27 [2018-11-07 07:14:17,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:14:17,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:14:17,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:14:17,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:14:17,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:14:17,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:17" (1/1) ... [2018-11-07 07:14:17,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d34f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:17, skipping insertion in model container [2018-11-07 07:14:17,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:17" (1/1) ... [2018-11-07 07:14:17,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:14:17,294 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:14:18,015 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:14:18,022 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:14:18,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:14:18,303 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:14:18,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18 WrapperNode [2018-11-07 07:14:18,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:14:18,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:14:18,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:14:18,306 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:14:18,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:14:18,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:14:18,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:14:18,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:14:18,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (1/1) ... [2018-11-07 07:14:18,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:14:18,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:14:18,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:14:18,682 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:14:18,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (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 07:14:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:14:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:14:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:14:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:14:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:14:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:14:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:14:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:14:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:14:23,573 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:14:23,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:23 BoogieIcfgContainer [2018-11-07 07:14:23,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:14:23,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:14:23,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:14:23,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:14:23,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:14:17" (1/3) ... [2018-11-07 07:14:23,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db77ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:23, skipping insertion in model container [2018-11-07 07:14:23,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:18" (2/3) ... [2018-11-07 07:14:23,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db77ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:23, skipping insertion in model container [2018-11-07 07:14:23,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:23" (3/3) ... [2018-11-07 07:14:23,586 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label19_true-unreach-call.c [2018-11-07 07:14:23,597 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:14:23,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:14:23,631 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:14:23,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:14:23,687 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:14:23,687 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:14:23,687 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:14:23,687 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:14:23,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:14:23,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:14:23,688 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:14:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:14:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 07:14:23,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:23,764 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:23,767 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:23,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:23,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2122630385, now seen corresponding path program 1 times [2018-11-07 07:14:23,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:23,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:23,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:23,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:23,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:24,826 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:14:25,035 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 07:14:25,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:25,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:14:25,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:25,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:14:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:14:25,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:25,064 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 07:14:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:27,306 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-11-07 07:14:27,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:14:27,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-11-07 07:14:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:27,333 INFO L225 Difference]: With dead ends: 855 [2018-11-07 07:14:27,333 INFO L226 Difference]: Without dead ends: 541 [2018-11-07 07:14:27,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:27,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-11-07 07:14:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-11-07 07:14:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-11-07 07:14:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-11-07 07:14:27,436 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 194 [2018-11-07 07:14:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:27,437 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-11-07 07:14:27,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:14:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-11-07 07:14:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-07 07:14:27,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:27,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:27,457 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:27,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:27,458 INFO L82 PathProgramCache]: Analyzing trace with hash -618112360, now seen corresponding path program 1 times [2018-11-07 07:14:27,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:27,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:27,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:27,961 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 07:14:27,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:27,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:14:27,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:27,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:14:27,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:14:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:14:27,965 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-11-07 07:14:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:31,352 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-11-07 07:14:31,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:14:31,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-07 07:14:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:31,369 INFO L225 Difference]: With dead ends: 1590 [2018-11-07 07:14:31,369 INFO L226 Difference]: Without dead ends: 1069 [2018-11-07 07:14:31,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:14:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-07 07:14:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-11-07 07:14:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-11-07 07:14:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-11-07 07:14:31,462 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 204 [2018-11-07 07:14:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:31,463 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-11-07 07:14:31,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:14:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-11-07 07:14:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 07:14:31,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:31,469 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:31,469 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:31,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1363104416, now seen corresponding path program 1 times [2018-11-07 07:14:31,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:31,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:31,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:31,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:31,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:31,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:31,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 07:14:31,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:31,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 07:14:31,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 07:14:31,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 07:14:31,681 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-11-07 07:14:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:35,062 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-11-07 07:14:35,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:14:35,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-11-07 07:14:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:35,092 INFO L225 Difference]: With dead ends: 3166 [2018-11-07 07:14:35,092 INFO L226 Difference]: Without dead ends: 2148 [2018-11-07 07:14:35,099 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 07:14:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-07 07:14:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-11-07 07:14:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-11-07 07:14:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-11-07 07:14:35,199 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 205 [2018-11-07 07:14:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:35,199 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-11-07 07:14:35,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 07:14:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-11-07 07:14:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 07:14:35,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:35,208 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:35,208 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:35,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash 639671669, now seen corresponding path program 1 times [2018-11-07 07:14:35,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:35,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:35,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:35,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:35,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:35,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:35,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:14:35,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:35,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:14:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:14:35,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:35,519 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-11-07 07:14:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:36,827 INFO L93 Difference]: Finished difference Result 4205 states and 6860 transitions. [2018-11-07 07:14:36,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:14:36,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-11-07 07:14:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:36,846 INFO L225 Difference]: With dead ends: 4205 [2018-11-07 07:14:36,846 INFO L226 Difference]: Without dead ends: 2106 [2018-11-07 07:14:36,854 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2018-11-07 07:14:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1941. [2018-11-07 07:14:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2018-11-07 07:14:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2865 transitions. [2018-11-07 07:14:36,916 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2865 transitions. Word has length 207 [2018-11-07 07:14:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:36,917 INFO L480 AbstractCegarLoop]: Abstraction has 1941 states and 2865 transitions. [2018-11-07 07:14:36,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:14:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2865 transitions. [2018-11-07 07:14:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 07:14:36,925 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:36,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:36,925 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:36,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1660323759, now seen corresponding path program 1 times [2018-11-07 07:14:36,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:36,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:36,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:36,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:36,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:37,285 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 07:14:37,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:37,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:14:37,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:37,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:14:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:14:37,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:14:37,287 INFO L87 Difference]: Start difference. First operand 1941 states and 2865 transitions. Second operand 4 states. [2018-11-07 07:14:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:40,212 INFO L93 Difference]: Finished difference Result 7424 states and 11507 transitions. [2018-11-07 07:14:40,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:14:40,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2018-11-07 07:14:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:40,252 INFO L225 Difference]: With dead ends: 7424 [2018-11-07 07:14:40,252 INFO L226 Difference]: Without dead ends: 5489 [2018-11-07 07:14:40,265 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 07:14:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2018-11-07 07:14:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5483. [2018-11-07 07:14:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-11-07 07:14:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 7840 transitions. [2018-11-07 07:14:40,437 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 7840 transitions. Word has length 209 [2018-11-07 07:14:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:40,441 INFO L480 AbstractCegarLoop]: Abstraction has 5483 states and 7840 transitions. [2018-11-07 07:14:40,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:14:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 7840 transitions. [2018-11-07 07:14:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 07:14:40,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:40,458 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:40,459 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:40,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:40,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1172684700, now seen corresponding path program 1 times [2018-11-07 07:14:40,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:40,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:40,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:40,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:40,702 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:14:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:40,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:40,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:14:40,742 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 07:14:40,745 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:14:40,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:14:40,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:14:41,926 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:14:41,928 INFO L272 AbstractInterpreter]: Visited 195 different actions 195 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:14:41,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:41,981 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:14:43,206 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 74.02% of their original sizes. [2018-11-07 07:14:43,207 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:14:43,857 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 07:14:43,858 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:14:43,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:14:43,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-11-07 07:14:43,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:43,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 07:14:43,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 07:14:43,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-07 07:14:43,860 INFO L87 Difference]: Start difference. First operand 5483 states and 7840 transitions. Second operand 15 states. [2018-11-07 07:15:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:12,505 INFO L93 Difference]: Finished difference Result 11170 states and 15965 transitions. [2018-11-07 07:15:12,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:15:12,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 218 [2018-11-07 07:15:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:12,531 INFO L225 Difference]: With dead ends: 11170 [2018-11-07 07:15:12,531 INFO L226 Difference]: Without dead ends: 5693 [2018-11-07 07:15:12,546 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:15:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2018-11-07 07:15:12,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5691. [2018-11-07 07:15:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5691 states. [2018-11-07 07:15:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 8058 transitions. [2018-11-07 07:15:12,691 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 8058 transitions. Word has length 218 [2018-11-07 07:15:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:12,691 INFO L480 AbstractCegarLoop]: Abstraction has 5691 states and 8058 transitions. [2018-11-07 07:15:12,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 07:15:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 8058 transitions. [2018-11-07 07:15:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 07:15:12,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:12,706 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:15:12,707 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:12,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1063849999, now seen corresponding path program 1 times [2018-11-07 07:15:12,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:12,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:12,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:12,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:12,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:13,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:13,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:13,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-07 07:15:13,036 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:13,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:13,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:14,574 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:15:14,574 INFO L272 AbstractInterpreter]: Visited 201 different actions 597 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:15:14,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:14,582 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:15:14,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:14,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:15:14,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:14,595 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:15:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:14,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:15:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:15,305 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:15:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:16,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:15:16,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-11-07 07:15:16,346 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:15:16,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:15:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:15:16,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:15:16,348 INFO L87 Difference]: Start difference. First operand 5691 states and 8058 transitions. Second operand 8 states. [2018-11-07 07:15:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:22,052 INFO L93 Difference]: Finished difference Result 21745 states and 37333 transitions. [2018-11-07 07:15:22,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 07:15:22,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2018-11-07 07:15:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:22,196 INFO L225 Difference]: With dead ends: 21745 [2018-11-07 07:15:22,196 INFO L226 Difference]: Without dead ends: 16268 [2018-11-07 07:15:22,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:15:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16268 states. [2018-11-07 07:15:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16268 to 15912. [2018-11-07 07:15:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15912 states. [2018-11-07 07:15:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 23715 transitions. [2018-11-07 07:15:23,326 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 23715 transitions. Word has length 227 [2018-11-07 07:15:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:23,327 INFO L480 AbstractCegarLoop]: Abstraction has 15912 states and 23715 transitions. [2018-11-07 07:15:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:15:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 23715 transitions. [2018-11-07 07:15:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 07:15:23,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:23,398 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:23,398 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:23,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash 631853219, now seen corresponding path program 1 times [2018-11-07 07:15:23,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:23,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:23,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:23,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:23,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:24,413 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 07:15:24,740 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 07:15:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:24,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:24,975 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:24,976 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 07:15:24,976 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:24,987 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:24,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:25,990 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:15:25,990 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:15:26,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:26,026 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:15:26,844 INFO L227 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 74.09% of their original sizes. [2018-11-07 07:15:26,845 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:15:28,397 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 07:15:28,397 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:15:28,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:15:28,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-11-07 07:15:28,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:15:28,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:15:28,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:15:28,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:15:28,399 INFO L87 Difference]: Start difference. First operand 15912 states and 23715 transitions. Second operand 20 states. [2018-11-07 07:15:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:43,198 INFO L93 Difference]: Finished difference Result 31826 states and 47524 transitions. [2018-11-07 07:15:43,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 07:15:43,198 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 239 [2018-11-07 07:15:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:43,273 INFO L225 Difference]: With dead ends: 31826 [2018-11-07 07:15:43,273 INFO L226 Difference]: Without dead ends: 16128 [2018-11-07 07:15:43,321 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:15:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16128 states. [2018-11-07 07:15:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16128 to 16125. [2018-11-07 07:15:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16125 states. [2018-11-07 07:15:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 23945 transitions. [2018-11-07 07:15:43,796 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 23945 transitions. Word has length 239 [2018-11-07 07:15:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:43,797 INFO L480 AbstractCegarLoop]: Abstraction has 16125 states and 23945 transitions. [2018-11-07 07:15:43,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:15:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 23945 transitions. [2018-11-07 07:15:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 07:15:43,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:43,850 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:15:43,850 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:43,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:43,851 INFO L82 PathProgramCache]: Analyzing trace with hash -132533247, now seen corresponding path program 1 times [2018-11-07 07:15:43,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:43,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:43,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:43,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:43,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 07:15:44,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:44,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:44,329 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-11-07 07:15:44,329 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:44,338 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:44,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:45,456 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:15:45,457 INFO L272 AbstractInterpreter]: Visited 202 different actions 600 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:15:45,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:45,466 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:15:45,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:45,466 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:15:45,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:45,475 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:15:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:45,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:15:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 07:15:45,763 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:15:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 07:15:46,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:15:46,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:15:46,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:15:46,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:15:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:15:46,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:15:46,036 INFO L87 Difference]: Start difference. First operand 16125 states and 23945 transitions. Second operand 9 states. [2018-11-07 07:15:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:51,211 INFO L93 Difference]: Finished difference Result 62361 states and 102960 transitions. [2018-11-07 07:15:51,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:15:51,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-11-07 07:15:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:51,491 INFO L225 Difference]: With dead ends: 62361 [2018-11-07 07:15:51,491 INFO L226 Difference]: Without dead ends: 46663 [2018-11-07 07:15:51,573 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-11-07 07:15:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46663 states. [2018-11-07 07:15:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46663 to 46084. [2018-11-07 07:15:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46084 states. [2018-11-07 07:15:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46084 states to 46084 states and 69987 transitions. [2018-11-07 07:15:53,350 INFO L78 Accepts]: Start accepts. Automaton has 46084 states and 69987 transitions. Word has length 252 [2018-11-07 07:15:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:53,351 INFO L480 AbstractCegarLoop]: Abstraction has 46084 states and 69987 transitions. [2018-11-07 07:15:53,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:15:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 46084 states and 69987 transitions. [2018-11-07 07:15:53,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 07:15:53,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:53,412 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:15:53,413 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:53,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1547866221, now seen corresponding path program 1 times [2018-11-07 07:15:53,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:53,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:53,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:53,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:53,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:53,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:53,900 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:53,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 07:15:53,901 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:53,907 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:53,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:55,188 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:15:55,188 INFO L272 AbstractInterpreter]: Visited 199 different actions 589 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:15:55,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:55,197 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:15:55,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:55,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:15:55,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:55,207 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:15:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:55,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:15:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:55,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:15:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:55,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:15:55,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 07:15:55,689 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:15:55,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:15:55,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:15:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:15:55,690 INFO L87 Difference]: Start difference. First operand 46084 states and 69987 transitions. Second operand 6 states. [2018-11-07 07:15:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:59,130 INFO L93 Difference]: Finished difference Result 89481 states and 137729 transitions. [2018-11-07 07:15:59,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:15:59,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-11-07 07:15:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:59,342 INFO L225 Difference]: With dead ends: 89481 [2018-11-07 07:15:59,342 INFO L226 Difference]: Without dead ends: 43834 [2018-11-07 07:15:59,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 503 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:15:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43834 states. [2018-11-07 07:16:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43834 to 43123. [2018-11-07 07:16:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43123 states. [2018-11-07 07:16:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43123 states to 43123 states and 61097 transitions. [2018-11-07 07:16:00,597 INFO L78 Accepts]: Start accepts. Automaton has 43123 states and 61097 transitions. Word has length 251 [2018-11-07 07:16:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:00,597 INFO L480 AbstractCegarLoop]: Abstraction has 43123 states and 61097 transitions. [2018-11-07 07:16:00,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:16:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43123 states and 61097 transitions. [2018-11-07 07:16:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-07 07:16:00,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:00,647 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:16:00,647 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:00,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:00,647 INFO L82 PathProgramCache]: Analyzing trace with hash -801272971, now seen corresponding path program 1 times [2018-11-07 07:16:00,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:00,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:00,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:00,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:00,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:01,200 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 07:16:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 79 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 07:16:01,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:01,240 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:01,240 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-07 07:16:01,241 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:01,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:01,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:01,888 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:16:01,888 INFO L272 AbstractInterpreter]: Visited 200 different actions 392 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:16:01,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:01,896 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:16:01,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:01,896 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:16:01,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:01,906 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:16:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:02,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:16:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-07 07:16:02,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:16:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-07 07:16:03,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:16:03,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 07:16:03,171 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:16:03,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:16:03,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:16:03,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:16:03,172 INFO L87 Difference]: Start difference. First operand 43123 states and 61097 transitions. Second operand 8 states. [2018-11-07 07:16:11,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:11,783 INFO L93 Difference]: Finished difference Result 137420 states and 220911 transitions. [2018-11-07 07:16:11,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-07 07:16:11,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2018-11-07 07:16:11,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:12,385 INFO L225 Difference]: With dead ends: 137420 [2018-11-07 07:16:12,385 INFO L226 Difference]: Without dead ends: 94724 [2018-11-07 07:16:12,622 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 07:16:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94724 states. [2018-11-07 07:16:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94724 to 90563. [2018-11-07 07:16:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90563 states. [2018-11-07 07:16:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90563 states to 90563 states and 120527 transitions. [2018-11-07 07:16:16,148 INFO L78 Accepts]: Start accepts. Automaton has 90563 states and 120527 transitions. Word has length 264 [2018-11-07 07:16:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:16,148 INFO L480 AbstractCegarLoop]: Abstraction has 90563 states and 120527 transitions. [2018-11-07 07:16:16,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:16:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 90563 states and 120527 transitions. [2018-11-07 07:16:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-07 07:16:16,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:16,233 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:16,233 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:16,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash 60933178, now seen corresponding path program 1 times [2018-11-07 07:16:16,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:16,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:16,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:16,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:16,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:16:16,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:16,793 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:16,794 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-11-07 07:16:16,794 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:16,800 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:16,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:17,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:16:17,543 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:16:17,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:17,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:16:18,226 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 74.33% of their original sizes. [2018-11-07 07:16:18,226 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:16:18,549 INFO L415 sIntCurrentIteration]: We unified 305 AI predicates to 305 [2018-11-07 07:16:18,550 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:16:18,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:16:18,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-07 07:16:18,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:18,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 07:16:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 07:16:18,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-11-07 07:16:18,551 INFO L87 Difference]: Start difference. First operand 90563 states and 120527 transitions. Second operand 21 states. [2018-11-07 07:16:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:45,655 INFO L93 Difference]: Finished difference Result 185214 states and 248745 transitions. [2018-11-07 07:16:45,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 07:16:45,655 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 306 [2018-11-07 07:16:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:45,974 INFO L225 Difference]: With dead ends: 185214 [2018-11-07 07:16:45,975 INFO L226 Difference]: Without dead ends: 101795 [2018-11-07 07:16:46,135 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:16:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101795 states. [2018-11-07 07:16:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101795 to 101258. [2018-11-07 07:16:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101258 states. [2018-11-07 07:16:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101258 states to 101258 states and 134160 transitions. [2018-11-07 07:16:48,465 INFO L78 Accepts]: Start accepts. Automaton has 101258 states and 134160 transitions. Word has length 306 [2018-11-07 07:16:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:48,465 INFO L480 AbstractCegarLoop]: Abstraction has 101258 states and 134160 transitions. [2018-11-07 07:16:48,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 07:16:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 101258 states and 134160 transitions. [2018-11-07 07:16:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-11-07 07:16:48,565 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:48,566 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2018-11-07 07:16:48,566 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:48,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:48,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1239375741, now seen corresponding path program 1 times [2018-11-07 07:16:48,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:48,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:48,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:48,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:48,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 119 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 07:16:49,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:49,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:49,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-11-07 07:16:49,752 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:49,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:49,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:51,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:16:51,665 INFO L272 AbstractInterpreter]: Visited 201 different actions 798 times. Merged at 8 different actions 31 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:16:51,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:51,675 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:16:52,280 INFO L227 lantSequenceWeakener]: Weakened 315 states. On average, predicates are now at 75.64% of their original sizes. [2018-11-07 07:16:52,280 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:16:52,641 INFO L415 sIntCurrentIteration]: We unified 317 AI predicates to 317 [2018-11-07 07:16:52,641 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:16:52,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:16:52,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [9] total 34 [2018-11-07 07:16:52,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:52,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-07 07:16:52,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-07 07:16:52,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2018-11-07 07:16:52,643 INFO L87 Difference]: Start difference. First operand 101258 states and 134160 transitions. Second operand 27 states. Received shutdown request... [2018-11-07 07:17:54,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-07 07:17:54,762 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:17:54,768 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:17:54,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:17:54 BoogieIcfgContainer [2018-11-07 07:17:54,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:17:54,769 INFO L168 Benchmark]: Toolchain (without parser) took 217593.21 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 07:17:54,770 INFO L168 Benchmark]: CDTParser took 0.21 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 07:17:54,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1126.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 07:17:54,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -898.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 07:17:54,772 INFO L168 Benchmark]: Boogie Preprocessor took 170.03 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:17:54,773 INFO L168 Benchmark]: RCFGBuilder took 4892.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 255.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. [2018-11-07 07:17:54,774 INFO L168 Benchmark]: TraceAbstraction took 211192.06 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 07:17:54,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1126.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 205.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -898.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.03 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4892.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 255.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211192.06 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1596]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1596). Cancelled while BasicCegarLoop was constructing difference of abstraction (101258states) and FLOYD_HOARE automaton (currently 45 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (56188 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 171.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3066 SDtfs, 20588 SDslu, 5087 SDs, 0 SdLazy, 31601 SolverSat, 4732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 3251 GetRequests, 3030 SyntacticMatches, 7 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101258occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9990759315265304 AbsIntWeakeningRatio, 0.25069637883008355 AbsIntAvgWeakeningVarsNumRemoved, 57.42711234911792 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 6622 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 4088 NumberOfCodeBlocks, 4088 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5061 ConstructedInterpolants, 0 QuantifiedInterpolants, 2453217 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4576 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 1187/1282 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown